Search and rescue crews on Thursday afternoon found a body believed to be a Palo Alto man missing for a day after hiking in the Sunol Regional Wilderness, authorities said.

The body discovered at 2 p.m. Thursday in the unincorporated Alameda County regional park is possibly Irwin “Don” Meyers, 70, of Palo Alto, according to the East Bay Regional Park District.

In a statement, the officials from the district sent condolences to Meyers’ family, but were awaiting official identification from the Alameda County Coroner’s Office.

Meyers left Palo Alto about 9:30 a.m. Wednesday and was planning to hike the Maguire Peak Trail. His partner told police he was expected back for a late lunch but did not return, according to Carolyn Jones, spokeswoman for the regional park district.

The body was discovered near Maguire Peak, where Alameda County Coroner deputies were dispatched to identify the body and begin an investigation, Jones said.

The search included East Bay Regional Park District police and fire departments, rangers and search and rescue units. Alameda County Fire and a California Highway Patrol helicopter also helped with the search, Jones said.

Meyers has hiked the Maguire Peak Trail before and at the time of his disappearance was considered to be in good physical condition. His car was located off Welch Creek Road near the Upper Maguire Peak Trail entrance. There appears to be no evidence of foul play, Jones said.